Tenoning-machine



No. 622,794. Patented Anr. Il. |899.

` W. BRDDHAGE.

TENONING MACHINE.

(Application led Mar, 26, 1898.)

umlnmllIHIIIIIMIIIIIHMUNI-Humm and thus accurately cutting each tenon.

In the accompanying drawings, Figure l is UNITED STATES PATENT EFICE.

WILLIAM BRODHAGE, OF ADDIEVILLE, ILLINOIS.

TE-NONING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 622,794, dated April11, 1899.

Application filed March 26, 1898.

To a/ZZ whom it Ina/y concern: A j

Be it.known that I, WILLIAM BRODHAGE, a citizen of the United States,residing at Addieville, in the county of Washington and State ofIllinois, have invented certain new and useful Improvements inTenoning-Machines and I do hereby declare the following to be a full,clear, and eXact description of the invent-ion, such as will enableothers skilled 4machine is provided with a hollow cutterhead, which isadapted to cut the tenon on the end of the spoke, and a means isprovided whereby the said cutter-head is forced a side elevation of thecomplete machine. Fig. 2 is a top plan view of the machine with thecrankc removed. Fig. 3 is a top plan view of the cutter-head with theyoke b removed, and Fig. 4 is a sectional view of the cutter-head cut onthe line c a of Fig. 3.

The yoke d forms the'upper portion of the machine. The adjustable clampsc e constitute the lower portion of themachine. The upper ends of theclamps e e are adjustably secured to the lower portion of the yoke d, aswill be hereinafterexplained. The cylinder fis hollow and -is providedat its lower end with the cutter-head c, said head being connected tothecylinder by means of the yoke h. The exterior of the cylinder f isprovided with a scale tu, as' shown in Fig. l, and

. the adjustable band g is clamped about the exterior of the cylinder f,the said band g being located near the upper end of the cylinder. Thethreaded rod h is fixed at its lower end to the upper end ofthecylinderf, and to the upper end of the threaded rod his fixed acrank-handle d. The rod 71, passes through a perforation in the upperportion of the yoke d and also through the guideplate t' and the rubberwasherj. The rubber senti No. 675,309. (No man.)

washerj is located between the upper end of the yoke d and theguide-plate t' and is rethe thread of the rod h, and thus as thecrankhandle c, is revolved the said rod h rises or falls, according tothe direction in which the said handle isrevolved. The yoke d isprovided with the horizontal section d', said sec-` tion having at anintermediate point the bowed sections d, between which the cylinder fpasses. Beyond the outer sides of the perpendicular portions of the yoked the horizontal section d is provided with the elongated perforationsd". The upper ends of the clamps e c are secured to the horizontalsection d' of the yoke d by means of the threaded bolts and thumb-nutsc, the said bolts passing through the elongated perforations OZ" and thethumb-nuts engaging the upper endsof the said bolts and clamping theparts together. Thus it will be seen that the upper ends of the clamps emay be shifted laterally along the horizontal portion d and secured atany desired position. The lower portions ofthe clamps c are providedwith the horizontal sections e and the downwardlyextending sectionse'l'. The clamping-blocks n n are secured to the inner sides of thedownwardly-extending sections c by means of the threaded bolts andthumb-nuts 0 o, as shown in Fig. 1. The loop p surrounds thedownwardlyeXteudin g sections e", the forward ends of the said loop pbeing secured together by means ot the plate r. through a perforation inthe plate r, the inner end of said shaft bear-in g laterally against theside of the nearer downwardly-extendin g section e between clamps c. Thecutter-head c is provided in its center with an opening adapted toreceive a removable gage-plate y, the said gage-plate y being providedwith a central opening, a separate gage-plate being provided for eachsize of te'non to be cut. Any

suitable means is provided whereby the said gage-plate y is secured inits proper position The threaded shaft s passes ICO in thecutter-head'c. -A block w@ having an upper inclined surface, is locatedon the upper face of the cutter-headc, said block being adapted to slidelongitudinally in the recess w and being held in position by means ofthe screw (See Fig. 4.) The knife n, is secured at its, upper end bymeans of the bolt o to the inclined surface of the block fw, the saidknife being preferably provided at its upper end with an elongated slotu', the bolt v passing through said slot, the head of the bolt holdingthe knife in position against the block. The lower end of the knifepasses through the opening c in the cutter-head c and a correspondingrecess y" in the gageplate y, the inner corner of the said knife beingiiush with the surface of the central opening` of the gage-plate y.

In operation the device works as follows: The wheel having the spokes tobe tenoned is secured in a horizontal position. Thus the spokes extendhorizontally. The end of one spoke is passed between the clamping-blocksn 'n of the clamps e e, and the clamps e e are set to throw the' properrelative positions on the horizontal section d of the yoke d. The shafts is then revolved by means of the crankhandle t, and thus the lowersections e of the clamps e are' brought together and the machine isattached to the end of the spoke. The threaded pliers 7c are then put inposition on the threaded rod hand the crankhandle a is turned. Thecutter-head cis then forced downward and causes the knife u to travel ina circular path, thereby cutting the tenon on the end of the spoke. 4Thedistance that the cutter-head c may be forced downward or the length ofthe .tenon desired on the spoke is regulated by the adjustment of theband g, which passes around the cylinder f and is clamped by means ofthe screw l, passing through its two ends.- When the cutter-head c hasbeen forced down until .the band g strikes the horizontal portion of theyoke d and the crank-handle a is continued to be turned, the pliers kwill be raised from the frame d, thus gradually pressing the rubberwasher j, thereby gradually raising the 4knife u and steadily decreasingthe coarseness of its cut until it ceases to take a cut at all, thusinsuring a square shoulder on the tenon. The clamping-blocks n n areconcaved on their inner faces and are thus adapted to receive any sizeof spoke.

Having thus described my. invention, what I claim as new, and desire tosecure by Letters Patent, is-r A tenoning-machine consisting of aclamping mechanism, a framework carrying said clamps, a screw-threadedrod carrying at its end a cutting mechanism, a stop for said rod andcutting mechanism a means for 4revolving said rod and cutting mechanism,internally-threaded pliers adapted to surround said rod, the thread ofthe pliers being adapted to engage the thread of the rod, the pliersbeing normally located against a stationary portion of the framework, aflexible cushion interposed between the pliers and a stationaryattachment of the framework.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM BRODIIAGE. Witnesses:

'WILLIAM GAEBE,

JAMES MONROE WINFREE.

